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Kobayashi, T. (1954). Studies on the Jurassic trigonians in Japan. Part 1. Preliminary notes. Japanese Journal of Geology and Geography. 25(1–2):61–80.
Kobayashi, T. (1954). Studies on the Jurassic trigonians in Japan. Part 1. Preliminary notes. Japanese Journal of Geology and Geography. 25(1–2):61–80.